CHOPPING, DICING, CHUNKING. Unless otherwise specified, chopping finely should measure approximately 1/16-1/8 inch non-uniform pieces. Chopping should measure: 1/4 inch non-uniform pieces. Dicing should measure: 1/4-1/2 inch uniform squares. And, chunking should measure: 3/4-1 inch uniform squares. No matter which you do, however, don’t be afraid to be neat. It shows you care about your creations.
When instructed to quarter an ingredient, as in quartering a tomato or potato, we mean to cut by following the imaginary lines of a cross, not parallel lines.